Coupling for drill-steels.



- C. C. HANSEN.

OOUPLING POR DRILL. STEELS.

APPLICATION FILED JUNE 6, 1908.

Patented Sept 14, 1909.

llhllj@ CHARLES C. .HANSEDL OF EASTON, PENNSYLVANIA, ASSIGNOB TO NG-ERSGLL-RAND COMPANY, F NEW YORK, N. Y., A. GOBJPOBATION 0F ANEVI JERSEY.

COUPLING FOR. DEILL-STEELS.

osmose.-

Specication of :Letters Patent. lxtttel'niwl tsl cept?. ll .199059.

Application led June ,6, 1.908. Serial No. 437,1*ZL

tions to hold the sections rigidlyv together and-yet will permit the ready separation of the said sections when so desired.

rlhis invention is more vparticularly applicable for use in connection with deep drilling.

A practical embodiment of my invention is represented in the accompanying drawings, in which- Figure l represents in side elevation, the

bit and ,several sections of an extension steel and their couplin s-as in use, Fig. 2 is an enlarged detail si e view. of one of the couplings with the adjacent ends or" two drill'steel sections clamped therein, Fig. 3 is a top plan view of the same, F ig. 4 1s a section taken in the plane of the line A-f-A or Fig. 2,-lookin'g in the direction of the arrows, portions of the adjacent ends of two drill steel sections being shown in sec'- tion and portions in side elevation, Fig. 5 is a transverse section taken in the plane of the line B-B of Fig. 4f, looking in the direction of the arrows, Figs. 6 and 7 are detail views in side elevation, of the'two interlocking members of the coupling.

rlhe drill steel sections are denoted by l and they are provided at their ends'whioh are to be coupled together with iat sided heads 2. These heads are composed of segmental flanges tapered toward, their curved peripheries so as to be enga ed by the fiarmg top and bottom walls o? the pockets in the coupling members for forcing the two steel sections into snug engagement as will hereinafter appear.

The coupling comprises two half members 3, each having a pocket 4 and two lugs 5 and 6 projecting-from one sidel and an intermediate lug 7 projecting from the other side of the said coupling member. The two coupling members are interchangeable.

"When the two members are assembled, the intermediate lug 'a' oi' each member is interposed between the upper and lower lugs 5 and (3 of the other member.

Tapered key slots v8- and 9 extend. vertically through the lugs 5 and 6 and a tapered key slot l0 extends through the intermediate lug 7, through which slots the tapered locking keys ll of the coupling are driven from the top of the coupling upon opposite sides of the drill steel sections for securing the two members in their interlocked adjustment.

rlho inner face of each of the intermediate lugs is flattened shown at 12 for engaging the liattened sides of the vheads 2 of the drill steel sections thereby preventing any rotary movement of the said steel sections with respect to the coupling. j

The top andbot-lom walls of the pockets 4 are Haring as shownat i3, lil, for engaging the corresponding tapered top and bottom sides of the heads 2 of the drill steel sections so that as the locking keys il are driven home the two adjacent drill steels are forced rigidly into engagement with each other.

By the use of the couplings, as herein described, it will be seen that the drill steel sections need not be .made of too great lengthsv for easy handling. llt will also be seen that the couplings will tend to guide and center the drill steel. within the hole being bored and prevent the buckling of the steel. Also, by entering the locking keys 1l from the top of the couplings, it will be seen that the blows of the drill steel bit will tend to still further tighten the coupling.

`What l claim iszl. llwo drill steel sections havin dat sided heads at their ends to be coupled, said heads having oppositely arranged tapered shoulders, a coupling comprising two inter'- locked members having pockets therein provided with flaring top and bottom walls en gaging the said tapered shoulders, and locking keys passing through said interlocked members upon opposite sides oi the drill steel sections for drawing the heads of the said drill steel sections into snug engagement with each other.

2. Two drill steel sections having lat sided heads at their ends to be coupled, said heads having oppositely arranged tapered shoulders,iJ coupling comprising two interehangeheads of the drill` steel sections into snug able interlocking members having oekets en agement with each other.

therein provided With Haring top and ottom n testimony, that I claim the foregoing as Walls engaging the said tapered shoulders my invention, I. have signed my name in 5 and each being provided with upper and presence of two witnesses, this 4th day of 15 lower lugs upon one side and an intermediateA June, 1908. lug upon the other side, and locking keys y CHARLES C. HANSEN. pussin through the upper and lower' lugs of Witnesses: one lo the members 'and the intermediateA ARTHUR J. SHIMER, I0 lug of the .other member for drawing the H. vAUGUSTUS.Grmrfe. 

